The correct option is B Alec Jeffreys
Alec Jeffreys, a British geneticist, discovered DNA fingerprinting in the year 1984. The technique makes use of certain unique patterns of specific DNA sequences, which are distinct for each individual. Since it could be used to identify individuals, the technique is also known as DNA profiling. The discovery of this technique soon became a major milestone in the field of forensic sciences, as it could help solve many criminal cases.